734 ADDITIONS AND CORRECTIONS. 



Page 395. — After Orobanche mixor insert — 



0. ram6sa, L. Often branched, 6' high or less, of a pale straw-color ; flow- 

 ers 3-bracteate, the lateral bracts small ; calyx 4-toothed, split at the back ; 

 corolla pale blue, 6 - 8" long. — On the roots of hemp and tobacco ; Ky. ( Int. 

 from Eu.) 



Page 421. — After Lamidm purpureum insert—. 



L. iNTERiiiiDiuM, Fries. Resembling L. purpureum, but the calyx-teeth 

 longer than the tube, the rather narrower corolla without a hairy ring within 

 near the base, and the nutlet longer (3 times as long as broad). — Cultivated 

 fields near Hingham, Mass. {C. J. Sprague). (Adv. from Eu.) 



Page 427. — Insert in the generic key — 



5 Cladotlirix. Flowers perfect, minute, axillary. Densely white-tomentose. 



Page 430. — Insert after the genus Froelichia — 



5. CLADOTHRIX, Xutt. 



Flowers perfect, 3-bracted. Sepals 5, erect, rigid-scarious, somewhat pilose. 

 Stamens 5, the filaments united at base; anthers large, 1-celled. Stigma 

 large, capitate, 2-lobed. Utricle globose, indehiscent. — Densely stellate- 

 tomentose low herbs or woody at base, with opposite petiolate leaves and very 

 small flowers solitary or few in the axils. (Name from K\d8os, a branch, and 

 6pi^, hair, for the branching tomentura.) 



1. C. lanuginosa, Nutt. Prostrate or ascending, much branched; 

 leaves rouud-obovate to rhomboidal, 3-10" long. — Central Kan. [Meehan) 

 and southwestward. 



Page 435. — Salsola Kali. This species has been found in Emmet Co., 

 Iowa [Crattji), at Yankton, S. Dak. (BrMAm),and in river-bottoms in N. "W* 

 Neb. and central part of the Dakotas. 



Page 437. — After Eriogonum annuum insert — 



2. E. Alleni, AVatson. Perennial, white-tomentose throughout, the tall 

 scape-like stem repeatedly dichotomous above ; radical leaves lanceolate, long- 

 petiolate, the upper in whorls of 4 or 5, ovate to oblong-ovate, very shortly 

 petiolate, much reduced above ; involucres mostly sessile ; flowers glabrous, 

 yellow, the segments elliptical. — Near White Sulphur Springs, AV. Va- 

 (T. F. Allen). 



Page 445. — Asarum Canadense. In this species there are rudimentary 

 subulate petals, alternate with the calyx-lobes. 



Page 463. — Celtis Mississippiensis. Common in low river-bottoms 

 of AV. Mo. {F. Bush) ; described as having a very smooth trunk, like a 

 sycamore, and soft yellowish brittle wood, not coarse-grained as in C 

 occidentalis. 



Page 491. — Under Pinus add — 



10. P. ponderosa, Dougl., var. SCOpulbrum, Engelm. Leaves in 

 twos or usually tlirees from long sheaths, 3-6' long, rather rigid ; staminate 

 flowers V long; cones subterminal, 2-3' long, oval, often 3-5 together, the 

 prominent summit of the thick scales bearing a stout straight or incurved 

 prickle. — Central Neb. and westward in the Rocky Mountains. — A large tree 

 with verv thick bark. 



